To analyze in an organized way, we sorted the results in each dataset based on the METEOR metric, which is the most used (see Figure REF ), at least in the reviewed literature.
After the results were sorted, we took the top five in each dataset. Table REF  shows the best five results reported in the seven most-used datasets. Here, is observed that the best ranked methods are not necessarily the most recent ones. The best result on the MSVD dataset was reached by [1]} on the three compared metrics. The same for the MSR-VTT dataset, where Gao et al. [2]} achieved the best result in all metrics. Nevertheless, this is not the case for the ActivityNet Captions dataset, where [3]} obtained the best result in the METEOR and BLEU-4 metrics and the worst result on CIDERr-D.
Only the METOR metric was used to report results for the M-VAD dataset because there were missing values in both BLEU-4 and CIDERr-D. The best result on the MPII dataset was achieved by [4]}, for the Youtube2Text dataset the best result on the METEOR and CIDERr-D was reached by [5]}, but this was not the case for BLEU-4.
Finally, on the Charades dataset, [6]} obtained the best score if we only consider the METEOR metric, but for BLEU-4 and CIDERr-D, that is not the case.
